title: Influence of the process parameters on the morphology and enzyme production of Aspergilli.
abstract: Several papers have been published dealing with various fungi to determine their morphology, enzyme production or process performance. However, no publication considered all of these aspects simultaneously. In the case of the production of xylanase by Aspergillus awamori the interrelationship of various key parameters are investigated. The influence of the reactor type (shake flasks, stirred tank and airlift tower loop reactor), the medium composition (semisynthetic and complex medium with wheat bran of different sizes, respectively as well as different concentrations of phosphate), and the specific power input (stirrer speed) on the growth, morphology, physiology, and productivity of the fungus are investigated. The results reveal a complex interrelationship which explains why the published results are contradictory. Without considering all of the relevant parameters, it is not possible to make general conclusions.
authors.affiliation: Institut für Technische Chemie der Universität Hannover, Germany.
authors.forename: K
authors.initials: K
authors.lastname: Schügerl
authors.forename: S R
authors.initials: SR
authors.lastname: Gerlach
authors.forename: D
authors.initials: D
authors.lastname: Siedenberg
mesh_terms: D001230:Aspergillus / Q000201:enzymology* / Q000502:physiology; D019149:Bioreactors; D001709:Biotechnology / Q000295:instrumentation / Q000379:methods*; D002021:Buffers; D004396:Coloring Agents; D004043:Dietary Fiber; D004790:Enzyme Induction; D016571:Neural Networks, Computer; D010710:Phosphates; D013170:Spores / Q000502:physiology; D013696:Temperature; D043325:Xylan Endo-1,3-beta-Xylosidase; D014995:Xylosidases / Q000096:biosynthesis*; D000516:alpha-Amylases / Q000096:biosynthesis
chemical_list: D002021:Buffers; D004396:Coloring Agents; D004043:Dietary Fiber; D010710:Phosphates; D014995:Xylosidases; D000516:alpha-Amylases; D043325:Xylan Endo-1,3-beta-Xylosidase